LOCUSTID^. 271 



stripe lanceolate, extending from the tip of the horn between the eyes to 

 the hind border. Eyes round, prominent. Third and fourth joints of the 

 maxillary palpi about equal in lenjjth ; fifth much longer than the fourth. 

 Prothorax elongate, with the stripe widening very slightly from the fore 

 border to the hind border. Abdomen with a linear stripe, which is paler 

 near the tip, where there is a blackish patch ; apical appendages large. 

 Fore femora with two minute spines beneath, three beneaih the middle 

 femora ; hind femora with one row of seven spines and with another of two; 

 four anterior tibiae with six spines on each side ; hind tibiae with four rows 

 of spines, most of which are in the two upper rows. Fore wings with many 

 tawny points and with a brown streak along the basal part of the interior 

 border; tympanum pellucid. Hind wings pellucid, a little shorter than 

 the fore wings ; veins pale. Length of the body 10^ lines ; expansion of 

 the fore wings 31 lines. 

 a. Demerara. From Mr. Bowers' collection. 



12. XiPHlDIUM PR^CIPUUM. 



Pallide testaceum ; caput el prothorax nigra univittata ; frons obliqua ; 



antenna fulvce^ basi lestacece ; femora guatuor anteriora trispinosa ; 



tibice quatuor anteriores biseriatirn spinosce ; alcB anticce vitta postica 



nigricante ; alee posticm diaphance. 

 Pale testaceous, paler beneath. Head with a black lanceolate stripe 

 on the vertex and with a porrect obtuse spine extending from between the 

 eyes ; front oblique. Eyes prominent. Antennae tawny, testaceous at the 

 base. Prothorax with a broad black stripe, which is narrower in front. 

 Fonr anterior femora beneath with a single row of three minute black- 

 lipped spines ; four anterior tibiae with five spines on each side beneath. 

 Wings much longer than the body. Fore wings with a blackish stripe 

 exientiing for less than half the length along the hind border. Hind 

 wings pellucid. Length of the body 9 ? lines ; of the fore wings 33 lines. 



The specimen described is mutilated. The spines on the anterior 

 tibiae are miach stouter than those of X.fuscum and of X, fasciatum ; the 

 spine between the eyes is more porrect than that of X.fuscum and more 

 acuminated than that of X. fasciatum, 

 a, Demerara. From Mr. Bowers' collection. 



West Africa. 



1^. XiPHIDIUM CONTINDUM. 



Foem. Viride, rufescente univitlatum ; antennee picece, basi virides; 



oviductus fulvus, arcuatus^ abdomine multo brevier; alee anticcB 



pallide fuscce, vitta subcostuli e guttis obscnrioribus, apud costam 



diaphancE viridi venosce ; alee posticce diaphance, longiores, fusco 



venosa, apud casta apicem subfuscescentes. 



Female. Grass-green, in structure like X.fuscum. Body with a 



reddish stripe, which widens from between the antennae to the hind border 



of the prothorax and is continued from ihence to the tip of the abdomen. 



Eyes livid. Antennae piceous, green at the base. Oviduct lawny, curved 



upward, much shorter ihan the abdomen. Fore wings pale brown, with a 



subcostal stripe of darker brown dots; costal space pellucid, with pale 



